A staff member poses with a Victor Edelstein evening gown worn by Britain's Princess Diana for the State Dinner at the White House in 1985, when Princess Diana danced with John Travolta, at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 200,000 - 300,000 GBP (303,000 - 455,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A staff member poses with a Victor Edelstein evening gown (C) worn by Britain's Princess Diana for the State Dinner at the White House in 1985, when Princess Diana danced with John Travolta, at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 200,000 - 300,000 GBP (303,000 - 455,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

An assistant poses with a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to India in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 80,000 - 120,000 GBP (121,000 - 182,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

An assistant poses with a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to India in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 80,000 - 120,000 GBP (121,000 - 182,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

An assistant poses with a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to India in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 80,000 - 120,000 GBP (121,000 - 182,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

An assistant poses with a Catherine Walker tailcoat worn by Britain's Princess Diana for the State visit to Korea in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 40,000 - 60,000 GBP (61,000 - 91,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

Kerry Taylor speaks to members of the media as she stands in front of a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to Austria in 1989 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 30,000 - 50,000 GBP (45,000 - 76,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

Dresses worn by Britain's Princess Diana (L-R) a Victor Edelstein evening gown worn for private entertaining in 1985, a Catherine Walker evening gown worn during a State Visit to Australia in 1985, a Catherine Walker pink sequined ivory crepe gown worn during a visit to Brazil in 1991, a Victor Edelstein evening gown worn for the State Dinner at the White House in 1985, a Catherine Walker evening gown worn for a State Visit to Austria in 1989, a Catherine Walker evening gown worn for a Vanity Fair photo-shoot with Mario Testino in 1997 and a Zandra Rhodes cocktail dress worn by Britain's Princess Diana to the Birthright benefit concert in 1987 are displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. AFP PHOTO / LEON NEAL

A Bruce Oldfield evening gown worn by Britain's Princess Diana for the opening night of "Les Miserables" in 1985 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 30,000 - 50,000 GBP (45,000 - 76,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A Victor Edelstein evening gown worn by Britain's Princess Diana for private entertaining in 1985 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 20,000 - 30,000 GBP (30,000 - 45,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A Catherine Walker evening gown worn by Britain's Princess Diana during a State Visit to Australia in 1985 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 40,000 - 50,000 GBP (61,000 - 76,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A Zandra Rhodes cocktail dress worn by Britain's Princess Diana to the Birthright benefit concert in 1987 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 30,000 - 40,000 GBP (45,000 - 61,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A Catherine Walker evening gown worn by Britain's Princess Diana for a State Visit to Austria in 1989 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 30,000 - 50,000 GBP (45,000 - 76,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

Catherine Walker evening gown worn by Britain's Princess Diana for a Vanity Fair photo-shoot with Mario Testino in 1997 is displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 50,000 - 70,000 GBP (76,000 - 106,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A picture shows a Victor Edelstein evening gown worn by Britain's Princess Diana for the State Dinner at the White House in 1985, when Princess Diana danced with John Travolta, at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 200,000 - 300,000 GBP (303,000 - 455,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A picture shows a Catherine Walker pink sequined ivory crepe gown worn by Britain's Princess Diana during a visit to Brazil in 1991 displayed at Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 40,000 - 60,000 GBP (61,000 - 91,000 USD) at the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A picture shows a detail view of a Catherine Walker tailcoat worn by Britain's Princess Diana for the State visit to Korea in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 40,000 - 60,000 GBP (61,000 - 91,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A picture shows a detail view of a Catherine Walker tailcoat worn by Britain's Princess Diana for the State visit to Korea in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 40,000 - 60,000 GBP (61,000 - 91,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

Close view of a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to India in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 80,000 - 120,000 GBP (121,000 - 182,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL

A picture shows close detail view of a Catherine Walker evening gown worn by Britain's Princess Diana for the State visit to India in 1992 at the Kerry Taylor Auction house in south London on March 15, 2013 ahead of a sale of ten dresses that belonged to the Princess. The gown is expected to sell for between 80,000 - 120,000 GBP (121,000 - 182,000 USD) in the auction taking place on March 19, 2013. AFP PHOTO / LEON NEAL